[Forums] Session Expiry

Hello All,

1] I have declared one session variable and I have put some value into it. When I don't do anything for some time session gets expire.But in outsystems inbuilt sessions are available like UserID,UserName,MobilePhone etc.they never expire.
I want some kind of popup on session expire which is I have declared or how to declare session like inbuilts are declared.
2] I want display calendar icon which is not displayed currently when I run a particular page.